
Anthropic cut 80% of Claude Code’s system prompt — what it m
Anthropic removed over 80% of Claude Code’s system prompt with no eval loss. Your CLAUDE.md might be fighting Opus 5. Learn how to audit and fix it.

Anthropic removed over 80% of Claude Code’s system prompt with no eval loss. Your CLAUDE.md might be fighting Opus 5. Learn how to audit and fix it.

Anthropic deleted 80% of Claude Code’s system prompt with zero eval loss. Here’s how to audit your CLAUDE.md and strip the dead weight today.